Editorial & technical review
- Written by ApplianceWorth Editorial Team
- Technically reviewed by Victor — appliance technician
- Last reviewed 2026-07-01
- Applies to Bosch refrigerators
- Confidence medium
- Also displayed as E20, E32
- Sources Manufacturer service documentation and field-repair experience · Methodology · Report a correction
What this code means
The electronic modules are not exchanging data normally. E20 concerns the main control and display modules; E32 and E35 involve the ice/water dispenser electronics and main power-module communication.
Most likely causes
- A loose low-voltage communication connector
- A pinched, corroded or broken harness
- A failed display or dispenser module
- A failed main power/control module
Safe checks for the owner
- Power the refrigerator off for five minutes and retry once.
- Note which functions are unavailable: cooling, display, ice or water.
- Do not probe communication wiring while the refrigerator is energized.
Estimated U.S. repair cost
$220–$450, depending on model, access, parts availability and local labor.